Study on Muscle Fatigue of Human Body Based on Surface Electromyography

By studying surface electromyography(sEMG) characteristics of human neck, shoulder and back muscles keeping static posture, to explore the precise evaluation index for muscle function of the human body, and the significance of muscle function prediction, diagnosis and rehabilitation evaluation. Method: 9 experiment objects, the sEMG signals of five muscles (neck extensor, upper trapezius, the middle trapezius, posterior deltoid, latissimus dorsi ) at deferent angles and deferent bed mattresses were tested by 8 channel sEMG collected system. The eigenvalue of MPF( Means power frequency)were processed by SPSS 16.0. Conclusion: deferent angles and deferent mattresses influenced greatly on the status of muscle function, neck, shoulder and back muscles is most tired when maintain 60 degree in normal mattress and most comfortable when 0 degree, but muscles is most comfortable at 30 degree in air mattress. At the same time air mattress is more comfortable than normal mattress especially at 30 and 60 degree.